// jni.cc - JNI implementation, including the jump table.
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation
This file is part of libgcj.
#ifdef ENABLE_JVMPI
#include <jvmpi.h>
#endif
-
+#ifdef INTERPRETER
+#include <jvmti.h>
+#include "jvmti-int.h"
+#endif
#include <java/lang/Class.h>
#include <java/lang/ClassLoader.h>
#include <java/lang/Throwable.h>
};
// Forward declarations.
-extern struct JNINativeInterface _Jv_JNIFunctions;
-extern struct JNIInvokeInterface _Jv_JNI_InvokeFunctions;
+extern struct JNINativeInterface_ _Jv_JNIFunctions;
+extern struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions;
// Number of slots in the default frame. The VM must allow at least
// 16.
// This structure is used to keep track of local references.
struct _Jv_JNI_LocalFrame
{
- // This is true if this frame object represents a pushed frame (eg
- // from PushLocalFrame).
- int marker;
+ // This is one of the MARK_ constants.
+ unsigned char marker;
// Flag to indicate some locals were allocated.
- int allocated_p;
+ bool allocated_p;
// Number of elements in frame.
int size;
+ // The class loader of the JNI method that allocated this frame.
+ ::java::lang::ClassLoader *loader;
+
// Next frame in chain.
_Jv_JNI_LocalFrame *next;
{
// This seems weird but I think it is correct.
obj = unwrap (obj);
+
+ // NULL is ok here -- the JNI specification doesn't say so, but this
+ // is a no-op.
+ if (! obj)
+ return;
+
unmark_for_gc (obj, global_ref_table);
}
// This seems weird but I think it is correct.
obj = unwrap (obj);
+ // NULL is ok here -- the JNI specification doesn't say so, but this
+ // is a no-op.
+ if (! obj)
+ return;
+
for (frame = env->locals; frame != NULL; frame = frame->next)
{
for (int i = 0; i < frame->size; ++i)
frame->marker = MARK_NONE;
frame->size = size;
- frame->allocated_p = 0;
+ frame->allocated_p = false;
memset (&frame->vec[0], 0, size * sizeof (jobject));
+ frame->loader = env->locals->loader;
frame->next = env->locals;
env->locals = frame;
set = true;
done = true;
frame->vec[i] = obj;
- frame->allocated_p = 1;
+ frame->allocated_p = true;
break;
}
}
_Jv_JNI_EnsureLocalCapacity (env, 16);
// We know the first element of the new frame will be ok.
env->locals->vec[0] = obj;
- env->locals->allocated_p = 1;
+ env->locals->allocated_p = true;
}
mark_for_gc (obj, local_ref_table);
{
if (rf->allocated_p)
memset (&rf->vec[0], 0, rf->size * sizeof (jobject));
- rf->allocated_p = 0;
+ rf->allocated_p = false;
rf = NULL;
break;
}
_Jv_JNI_PopLocalFrame (env, NULL, MARK_SYSTEM);
else
env->locals = NULL;
-
+
+#ifdef INTERPRETER
if (__builtin_expect (env->ex != NULL, false))
{
jthrowable t = env->ex;
env->ex = NULL;
+ if (JVMTI_REQUESTED_EVENT (Exception))
+ _Jv_ReportJVMTIExceptionThrow (t);
throw t;
}
+#endif
}
template<typename T> T extract_from_jvalue(jvalue const & t);
jstring n = JvNewStringUTF (s);
java::lang::ClassLoader *loader = NULL;
- if (env->klass != NULL)
- loader = env->klass->getClassLoaderInternal ();
+ if (env->locals->loader != NULL)
+ loader = env->locals->loader;
if (loader == NULL)
{
}
r = loader->loadClass (n);
+ _Jv_InitClass (r);
}
catch (jthrowable t)
{
java::lang::StringBuffer *name_sig =
new java::lang::StringBuffer (JvNewStringUTF (name));
- name_sig->append ((jchar) ' ')->append (JvNewStringUTF (s));
+ name_sig->append ((jchar) ' ');
+ name_sig->append (JvNewStringUTF (s));
env->ex = new java::lang::NoSuchMethodError (name_sig->toString ());
}
catch (jthrowable t)
template<typename T, invocation_type style>
static T JNICALL
_Jv_JNI_CallAnyMethodA (JNIEnv *env, jobject obj, jclass klass,
- jmethodID id, jvalue *args)
+ jmethodID id, const jvalue *args)
{
obj = unwrap (obj);
klass = unwrap (klass);
template<invocation_type style>
static void JNICALL
_Jv_JNI_CallAnyVoidMethodA (JNIEnv *env, jobject obj, jclass klass,
- jmethodID id, jvalue *args)
+ jmethodID id, const jvalue *args)
{
jclass decl_class = klass ? klass : obj->getClass ();
JvAssert (decl_class != NULL);
template<typename T>
static T JNICALL
_Jv_JNI_CallMethodA (JNIEnv *env, jobject obj,
- jmethodID id, jvalue *args)
+ jmethodID id, const jvalue *args)
{
return _Jv_JNI_CallAnyMethodA<T, normal> (env, obj, NULL, id, args);
}
static void JNICALL
_Jv_JNI_CallVoidMethodA (JNIEnv *env, jobject obj,
- jmethodID id, jvalue *args)
+ jmethodID id, const jvalue *args)
{
_Jv_JNI_CallAnyVoidMethodA<normal> (env, obj, NULL, id, args);
}
template<typename T>
static T JNICALL
_Jv_JNI_CallStaticMethodA (JNIEnv *env, jclass klass, jmethodID id,
- jvalue *args)
+ const jvalue *args)
{
JvAssert (((id->accflags) & java::lang::reflect::Modifier::STATIC));
JvAssert (java::lang::Class::class$.isInstance (unwrap (klass)));
static void JNICALL
_Jv_JNI_CallStaticVoidMethodA (JNIEnv *env, jclass klass,
- jmethodID id, jvalue *args)
+ jmethodID id, const jvalue *args)
{
_Jv_JNI_CallAnyVoidMethodA<static_type> (env, NULL, klass, id, args);
}
static jobject JNICALL
_Jv_JNI_NewObjectA (JNIEnv *env, jclass klass, jmethodID id,
- jvalue *args)
+ const jvalue *args)
{
JvAssert (klass && ! klass->isArray ());
JvAssert (! strcmp (id->name->chars(), "<init>")
{
try
{
+ // For compatibility with the JDK.
+ if (!bytes)
+ return NULL;
jstring result = JvNewStringUTF (bytes);
return (jstring) wrap_value (env, result);
}
template<typename T, jclass K>
static void JNICALL
_Jv_JNI_SetPrimitiveArrayRegion (JNIEnv *env, JArray<T> *array,
- jsize start, jsize len, T *buf)
+ jsize start, jsize len, const T *buf)
{
array = unwrap (array);
if (! _Jv_JNI_check_types (env, array, K))
void JNICALL
_Jv_JNI_DeleteWeakGlobalRef (JNIEnv *, jweak obj)
{
+ // JDK compatibility.
+ if (obj == NULL)
+ return;
+
using namespace gnu::gcj::runtime;
JNIWeakRef *ref = reinterpret_cast<JNIWeakRef *> (obj);
unmark_for_gc (ref, global_ref_table);
return tmp->capacity();
}
+static jobjectRefType JNICALL
+_Jv_JNI_GetObjectRefType (JNIEnv *, MAYBE_UNUSED jobject object)
+{
+ JvFail("GetObjectRefType not implemented");
+ return JNIInvalidRefType;
+}
+
\f
+struct NativeMethodCacheEntry : public JNINativeMethod
+{
+ char *className;
+};
+
// Hash table of native methods.
-static JNINativeMethod *nathash;
+static NativeMethodCacheEntry *nathash;
// Number of slots used.
static int nathash_count = 0;
// Number of slots available. Must be power of 2.
// Compute a hash value for a native method descriptor.
static int
-hash (const JNINativeMethod *method)
+hash (const NativeMethodCacheEntry *method)
{
char *ptr;
int hash = 0;
+ ptr = method->className;
+ while (*ptr)
+ hash = (31 * hash) + *ptr++;
+
ptr = method->name;
while (*ptr)
hash = (31 * hash) + *ptr++;
}
// Find the slot where a native method goes.
-static JNINativeMethod *
-nathash_find_slot (const JNINativeMethod *method)
+static NativeMethodCacheEntry *
+nathash_find_slot (const NativeMethodCacheEntry *method)
{
jint h = hash (method);
int step = (h ^ (h >> 16)) | 1;
for (;;)
{
- JNINativeMethod *slotp = &nathash[w];
+ NativeMethodCacheEntry *slotp = &nathash[w];
if (slotp->name == NULL)
{
if (del >= 0)
else if (slotp->name == DELETED_ENTRY)
del = w;
else if (! strcmp (slotp->name, method->name)
- && ! strcmp (slotp->signature, method->signature))
+ && ! strcmp (slotp->signature, method->signature)
+ && ! strcmp (slotp->className, method->className))
return slotp;
w = (w + step) & (nathash_size - 1);
}
// Find a method. Return NULL if it isn't in the hash table.
static void *
-nathash_find (JNINativeMethod *method)
+nathash_find (NativeMethodCacheEntry *method)
{
if (nathash == NULL)
return NULL;
- JNINativeMethod *slot = nathash_find_slot (method);
+ NativeMethodCacheEntry *slot = nathash_find_slot (method);
if (slot->name == NULL || slot->name == DELETED_ENTRY)
return NULL;
return slot->fnPtr;
{
nathash_size = 1024;
nathash =
- (JNINativeMethod *) _Jv_AllocBytes (nathash_size
- * sizeof (JNINativeMethod));
+ (NativeMethodCacheEntry *) _Jv_AllocBytes (nathash_size
+ * sizeof (NativeMethodCacheEntry));
}
else
{
int savesize = nathash_size;
- JNINativeMethod *savehash = nathash;
+ NativeMethodCacheEntry *savehash = nathash;
nathash_size *= 2;
nathash =
- (JNINativeMethod *) _Jv_AllocBytes (nathash_size
- * sizeof (JNINativeMethod));
+ (NativeMethodCacheEntry *) _Jv_AllocBytes (nathash_size
+ * sizeof (NativeMethodCacheEntry));
for (int i = 0; i < savesize; ++i)
{
if (savehash[i].name != NULL && savehash[i].name != DELETED_ENTRY)
{
- JNINativeMethod *slot = nathash_find_slot (&savehash[i]);
+ NativeMethodCacheEntry *slot = nathash_find_slot (&savehash[i]);
*slot = savehash[i];
}
}
}
static void
-nathash_add (const JNINativeMethod *method)
+nathash_add (const NativeMethodCacheEntry *method)
{
if (3 * nathash_count >= 2 * nathash_size)
natrehash ();
- JNINativeMethod *slot = nathash_find_slot (method);
+ NativeMethodCacheEntry *slot = nathash_find_slot (method);
// If the slot has a real entry in it, then there is no work to do.
if (slot->name != NULL && slot->name != DELETED_ENTRY)
return;
- // FIXME
+ // FIXME: memory leak?
slot->name = strdup (method->name);
+ slot->className = strdup (method->className);
// This was already strduped in _Jv_JNI_RegisterNatives.
slot->signature = method->signature;
slot->fnPtr = method->fnPtr;
// the nathash table.
JvSynchronize sync (global_ref_table);
- JNINativeMethod dottedMethod;
+ NativeMethodCacheEntry dottedMethod;
// Look at each descriptor given us, and find the corresponding
// method in the class.
// Copy this JNINativeMethod and do a slash to dot
// conversion on the signature.
dottedMethod.name = methods[j].name;
+ // FIXME: we leak a little memory here if the method
+ // is not found.
dottedMethod.signature = strdup (methods[j].signature);
dottedMethod.fnPtr = methods[j].fnPtr;
+ dottedMethod.className = _Jv_GetClassNameUtf8 (klass)->chars();
char *c = dottedMethod.signature;
while (*c)
{
buf[here] = '\0';
}
-// Return the current thread's JNIEnv; if one does not exist, create
-// it. Also create a new system frame for use. This is `extern "C"'
-// because the compiler calls it.
-extern "C" JNIEnv *
-_Jv_GetJNIEnvNewFrame (jclass klass)
+JNIEnv *
+_Jv_GetJNIEnvNewFrameWithLoader (::java::lang::ClassLoader *loader)
{
JNIEnv *env = _Jv_GetCurrentJNIEnv ();
if (__builtin_expect (env == NULL, false))
{
env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
- env->p = &_Jv_JNIFunctions;
- env->klass = klass;
+ env->functions = &_Jv_JNIFunctions;
env->locals = NULL;
// We set env->ex below.
_Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
+ (FRAME_SIZE
* sizeof (jobject)));
-
+
env->bottom_locals->marker = MARK_SYSTEM;
env->bottom_locals->size = FRAME_SIZE;
env->bottom_locals->next = NULL;
- env->bottom_locals->allocated_p = 0;
+ env->bottom_locals->allocated_p = false;
+ // We set the klass field below.
memset (&env->bottom_locals->vec[0], 0,
env->bottom_locals->size * sizeof (jobject));
// built, above.
if (__builtin_expect (env->locals == NULL, true))
- env->locals = env->bottom_locals;
-
+ {
+ env->locals = env->bottom_locals;
+ env->locals->loader = loader;
+ }
else
{
// Alternatively, we might be re-entering JNI, in which case we can't
// reuse the bottom_locals frame, because it is already underneath
// us. So we need to make a new one.
-
_Jv_JNI_LocalFrame *frame
= (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
+ (FRAME_SIZE
* sizeof (jobject)));
-
+
frame->marker = MARK_SYSTEM;
frame->size = FRAME_SIZE;
- frame->allocated_p = 0;
+ frame->allocated_p = false;
frame->next = env->locals;
+ frame->loader = loader;
memset (&frame->vec[0], 0,
frame->size * sizeof (jobject));
return env;
}
+// Return the current thread's JNIEnv; if one does not exist, create
+// it. Also create a new system frame for use. This is `extern "C"'
+// because the compiler calls it.
+extern "C" JNIEnv *
+_Jv_GetJNIEnvNewFrame (jclass klass)
+{
+ return _Jv_GetJNIEnvNewFrameWithLoader (klass->getClassLoaderInternal());
+}
+
// Destroy the env's reusable resources. This is called from the thread
// destructor "finalize_native" in natThread.cc
void
buf[name_length] = '\0';
strncpy (buf + name_length + 1, signature->chars (), sig_length);
buf[name_length + sig_length + 1] = '\0';
- JNINativeMethod meth;
+ NativeMethodCacheEntry meth;
meth.name = buf;
meth.signature = buf + name_length + 1;
+ meth.className = _Jv_GetClassNameUtf8(klass)->chars();
function = nathash_find (&meth);
if (function != NULL)
return function;
// This function is the stub which is used to turn an ordinary (CNI)
// method call into a JNI call.
void
-_Jv_JNIMethod::call (ffi_cif *, void *ret, ffi_raw *args, void *__this)
+_Jv_JNIMethod::call (ffi_cif *, void *ret, INTERP_FFI_RAW_TYPE *args,
+ void *__this)
{
_Jv_JNIMethod* _this = (_Jv_JNIMethod *) __this;
}
}
- JvAssert (_this->args_raw_size % sizeof (ffi_raw) == 0);
- ffi_raw real_args[2 + _this->args_raw_size / sizeof (ffi_raw)];
+ JvAssert (_this->args_raw_size % sizeof (INTERP_FFI_RAW_TYPE) == 0);
+ INTERP_FFI_RAW_TYPE
+ real_args[2 + _this->args_raw_size / sizeof (INTERP_FFI_RAW_TYPE)];
int offset = 0;
// First argument is always the environment pointer.
// Copy over passed-in arguments.
memcpy (&real_args[offset], args, _this->args_raw_size);
+
+ // Add a frame to the composite (interpreted + JNI) call stack
+ java::lang::Thread *thread = java::lang::Thread::currentThread();
+ _Jv_NativeFrame nat_frame (_this, thread);
// The actual call to the JNI function.
#if FFI_NATIVE_RAW_API
env = (JNIEnv *) _Jv_MallocUnchecked (sizeof (JNIEnv));
if (env == NULL)
return JNI_ERR;
- env->p = &_Jv_JNIFunctions;
+ env->functions = &_Jv_JNIFunctions;
env->ex = NULL;
- env->klass = NULL;
env->bottom_locals
= (_Jv_JNI_LocalFrame *) _Jv_MallocUnchecked (sizeof (_Jv_JNI_LocalFrame)
+ (FRAME_SIZE
return JNI_ERR;
}
- env->locals->allocated_p = 0;
+ env->locals->allocated_p = false;
env->locals->marker = MARK_SYSTEM;
env->locals->size = FRAME_SIZE;
+ env->locals->loader = NULL;
env->locals->next = NULL;
for (int i = 0; i < env->locals->size; ++i)
}
#endif
+#ifdef INTERPRETER
+ // Handle JVMTI requests
+ if (version == JVMTI_VERSION_1_0)
+ {
+ *penv = (void *) _Jv_GetJVMTIEnv ();
+ return 0;
+ }
+#endif
+
// FIXME: do we really want to support 1.1?
if (version != JNI_VERSION_1_4 && version != JNI_VERSION_1_2
&& version != JNI_VERSION_1_1)
#define RESERVED NULL
-struct JNINativeInterface _Jv_JNIFunctions =
+struct JNINativeInterface_ _Jv_JNIFunctions =
{
RESERVED,
RESERVED,
_Jv_JNI_NewDirectByteBuffer, // NewDirectByteBuffer
_Jv_JNI_GetDirectBufferAddress, // GetDirectBufferAddress
- _Jv_JNI_GetDirectBufferCapacity // GetDirectBufferCapacity
+ _Jv_JNI_GetDirectBufferCapacity, // GetDirectBufferCapacity
+
+ _Jv_JNI_GetObjectRefType // GetObjectRefType
};
-struct JNIInvokeInterface _Jv_JNI_InvokeFunctions =
+struct JNIInvokeInterface_ _Jv_JNI_InvokeFunctions =
{
RESERVED,
RESERVED,
OSDN Git Service
